160GB Caviar 3.5" Internal SE ATA Hard Drive Cool-running, quiet operation, superior performance and industry leading reliability Perfect for high-performance family and business desktops supporting multimedia functions, photo editing, and many other demanding applications Storage Capacity: 160GB Rotational Speed: 7200rpm Hard Drive Interface: 1 x IDC Ultra ATA/100 (ATA-6) IDE/EIDE Form Factor: Internal Compatible Drive Bay Width: 3.5" Maximum External Data Transfer Rate: 100MBps Buffer: 8MB Package Type: Bulk Weight: 1.28 lbs L 8.25 in. x W 7.00 in. x H 2.75 in.

250GB Scorpio Black 2.5" Internal SATA Hard Drive - 16MB Buffer Delivers the capacity and speed needed to supercharge a notebook PC without compromising battery life or quiet acoustics Outstanding option for compact desktops, external hard drives, gaming systems, and blade servers Storage Capacity: 250GB Rotational Speed: 7200rpm Hard Drive Interface: 1 x 7-pin Serial ATA/300 Serial ATA Form Factor: Internal Hot Swappable: Yes Compatible Drive Bay Width: 2.5" Maximum External Data Transfer Rate: 300MBps Buffer: 16MB 2 3/4" W x 5/16" H x 3 7/8" D Package Type: Bulk 5-year warranty Weight: 0.5 lbs L 8.30 in. x W 7.10 in. x H 2.60 in.